Energy and radius of first Bohr orbit of $\mathrm{He}^{+}$and $\mathrm{Li}^{2+}$ are [Given $\mathrm{R}_{\mathrm{H}}=2.18 \times 10^{-18} \mathrm{~J}, \mathrm{a}_0=52.9 \mathrm{pm}$ ]
Among the given compounds I-III, the correct order of bond dissociation energy of C-H bond marked with * is :
Dalton's Atomic theory could not explain which of the following?
Identify the correct orders against the property mentioned
A. $\mathrm{H}_2 \mathrm{O}>\mathrm{NH}_3>\mathrm{CHCl}_3$-dipole moment
B. $\mathrm{XeF}_4>\mathrm{XeO}_3>\mathrm{XeF}_2$ - number of lone pairs on central atom
C. $\mathrm{O}-\mathrm{H}>\mathrm{C}-\mathrm{H}>\mathrm{N}-\mathrm{O}-$ bond length
D. $\mathrm{N}_2>\mathrm{O}_2>\mathrm{H}_2-$ bond enthalpy
Choose the correct answer from the options given below: